XDC2012: Graphics stack security

Posted Oct 4, 2012 7:39 UTC (Thu) by farnz (subscriber, #17727)
In reply to: XDC2012: Graphics stack security by dgm
Parent article: XDC2012: Graphics stack security

Nope, you got it wrong. Take virtual keyboards, for instance. Currently they are not possible in Wayland because it has been decided that the compositor should not touch input in any way, applications receive it directly from the kernel. This decision effectively locks down _all_ applications, even those for which input integrity is of no use.

Have you a cite for that? My recollection, backed by the protocol spec is that the Wayland compositor is the only application that gets input directly from the kernel; everything else is notified of events by the compositor. This is essential if the compositor is to transform events in arbitrary fashion - how can a surface know where it is in kernel-global coordinates if the compositor is the only thing that knows about the arbitrary transform applied to it?